NM-B391 EC / KBC Firmware

Part of NM-B391

2 EC firmwares for NM-B391 are indexed here. The board is used in the Lenovo Legion Y520-15IKBN, Lenovo ThinkPad R720 15IKBM and Lenovo Y520 15IKBM. Board revisions: 1.0 and V1.

EC files 2

FileSizeRevAddedSource
R720 DY520 NM-B391 REV 1.0 BIOS AND KBC
BIOSEC
5.0 MB
1.0
Get on Telegram BIOS Archive
Lenovo Legion Y520-15IKBN NM-B391 Rev.v1 BIOS+ EC bios
BIOSEC
5.1 MB
V1
Get on Telegram BIOS Archive

Laptops that use NM-B391

What these files are for

EC (embedded controller) firmware runs the keyboard controller, power sequencing, battery charging and fans. Depending on the board it lives in a separate chip (ENE KB9012, ITE IT85xx, Nuvoton NPCE) or inside the main SPI image, so check which applies before flashing.

Tools to open these files

FormatWhat it isOpen with
.rarRAR archive7-Zip or WinRAR